Boxing legend Floyd Mayweather Jr. (pictured) has cleared a major hurdle in setting up a blockbuster boxing match with UFC lightweight champion Conor McGregor – Mayweather has announced he has officially come out of retirement just to face McGregor.

Mayweather upped the ante by setting a June timeframe for their boxing match. All that needs to happen now is for McGregor to agree to Mayweather’s financial terms and put pen to paper. Oh yeah, also get the UFC’s blessing or sidestep his bosses altogether.

“When I faced Arturo Gatti, I went to his turf,” Mayweather told a group of reporters (which was recorded by FightHype.com). “He was the A side, I was the B side. I beat him. I didn’t cry. I didn’t complain. When I faced Oscar De La Hoya, he was the A side, I was the B side. I didn’t cry. I didn’t complain. I beat him and I became the A side. For Conor McGregor, I’m coming out of retirement, just to fight Conor McGregor.

“I don’t want to hear no more excuses about the money, about the UFC. Sign the paper with the UFC so you can fight me in June. Simple and plain. Let’s fight in June. You’re the B side, I’m the A side. We’re not here to cry about money. I’m tired of all this crying about money and talking about you want to fight. You blowing smoke up everybody’s ass. If you want to fight, sign the paperwork, let’s do it.”

Mayweather didn’t reveal if his financial demands have deviated from the $100 million guaranteed that he laid out in January, but it’s assumed he’s not budging. McGregor has thrown out that he also wants $100 million for the bout, which is why Mayweather keeps bringing up this whole “I’m the A side and he’s the B side” thing.

As Mayweather previously said on ESPN’s First Take,”I don’t really know how much money Conor McGregor has made, I’m pretty sure he hasn’t even made $10 million in a MMA bout. But we are willing to give him $15 million, and then we can talk about splitting the percentage, the back-end percentage on pay-per-view. But of course, we’re the A-side. How can a guy talk about $20 or $30 million if he’s never even made $8 or $9 million?”

Two months ago, UFC president Dana White countered Mayweather’s bid by offering both fighters $25 million apiece, plus a percentage of the show’s pay-per-view buys to be negotiated later.

McGregor hasn’t been seen since dusting Eddie Alvarez in November to capture the UFC lightweight belt. He was expected to take off the first-half of 2017 until the arrival of his first son.

McGregor said during Januray’s pay-per-view interview that “100 percent. I believe the next time that I step into a combat arena will be through the ropes wearing eight-ounce gloves [to fight Mayweather].”

The ball now appears to be in McGregor’s court, because his proposed opponent has decided to go back to work just to meet him after retiring in September 2015.

“Today, I’m officially out of retirement for Conor McGregor,” Mayweather said in closing. “We don’t need to waste no time. We need to make this s**t happen quickly. Let’s get it on in June.”

From Mayweather’s perspective, there certainly is no time to waste. He just turned 40 last month. McGregor, who has never competed in a professional boxing match, is just entering the prime of his fighting career at 28.